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Analysis of the Effect of Skin Pigmentation and Oxygen Saturation on Monte Carlo-Simulated Reflectance Photoplethysmography Signals.
Sensors (Basel)
January 2025
Research Centre for Biomedical Engineering, City St George's, University of London, London EC1V 0HB, UK.
The effect of skin pigmentation on photoplethysmography and, specifically, pulse oximetry has recently received a significant amount of attention amongst researchers, especially since the COVID-19 pandemic. With most computational studies observing overestimation of arterial oxygen saturation (SpO) in individuals with darker skin, this study seeks to further investigate the root causes of these discrepancies. This study analysed intensity changes from Monte Carlo-simulated reflectance PPG signals across light, moderate, and dark skin types at oxygen saturations of 70% and 100% in MATLAB R2024a.
View Article and Find Full Text PDFUtility of Protein Markers in COVID-19 Patients.
Int J Mol Sci
January 2025
Research and Innovation Unit, Hospital Costa del Sol, Autovía A-7 km 187, 29603 Marbella, Spain.
COVID-19 has been a challenge at the healthcare level not only in the early stages of the pandemic, but also in the subsequent appearance of long-term COVID-19. Several investigations have attempted to identify proteomic biomarkers in an attempt to improve clinical care, guide treatment and predict possible patient outcomes. Proteins such as C-reactive protein (CRP) or interleukin 6 (IL-6) are clear markers of severe disease, but many others have been proposed that could help in risk stratification and in the prediction of specific complications.
View Article and Find Full Text PDFPathology of Red Blood Cells in Patients with SARS-CoV-2.
Biomedicines
January 2025
Laboratory of Cell Biology and Virology, Institute of Molecular Biology of NAS RA, Yerevan 0014, Armenia.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been associated with various hematological disorders. Understanding the pathology of erythrocytes (red blood cells) in coronavirus infection may provide insights into disease severity and progression. To review and analyze the general pathology of erythrocytes in patients infected with SARS-CoV-2, focusing on clinical and laboratory findings across different severity groups.
View Article and Find Full Text PDFOctober 2024 ACIP Meeting Update: Influenza, COVID-19, RSV and Other Vaccines.
Pediatrics
January 2025
Department of Pediatrics, University of Cincinnati College of Medicine and Division of Pediatric Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati OH.
The Advisory Committee on Immunization Practices (ACIP), a group of medical and public health experts that provides advice to the Centers for Disease Control and Prevention, normally meets 3 times per year to develop US vaccine recommendations. The ACIP met October 23-24, 2024, to discuss influenza vaccines, chikungunya vaccines, coronavirus disease (COVID-19) vaccines, RSV immunizations, meningococcal vaccines, human papillomavirus (HPV) vaccines, pneumococcal vaccines, and adult and child/adolescent immunization schedule revisions. This update summarizes the proceedings of these meetings, with an emphasis on topics that are most relevant to the pediatric population.
View Article and Find Full Text PDFDynamics of coagulation proteins upon ICU admission and after one year of recovery from COVID-19: a preliminary study.
Front Cell Infect Microbiol
January 2025
Unit of Viral Infection and Immunity, National Center for Microbiology (CNM), Health Institute Carlos III (ISCIII), Majadahonda, Madrid, Spain.
Objectives: This study aimed to investigate the association of baseline coagulation proteins with hospitalization variables in COVID-19 patients admitted to ICU, as well as coagulation system changes after one-year post-discharge, taking into account gender-specific bias in the coagulation profile.
Methods: We conducted a prospective longitudinal study on 49 ICU-admitted COVID-19 patients. Proteins were measured using a Luminex 200™.
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